Seoul (ICN) to San Francisco (SFO) cheap flight deal from $441 USD in economy class

UAUnited Airlines

Round Trip•Economy

ICN

Incheon International Airport

Seoul, South Korea

SFO

San Francisco International Airport

San Francisco, United States

$920 USD

-52%$441 USD

Verified Sep 21, 2025 at 5:35 PM

September 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22$441 23$561 24$441 25$561 26$441 27$607 28$590 29$630 30$908 1$1,266 2$1,495 3$1,442 4$686 5$782

Limited Availability

11% of dates checked are available within 10% of the lowest price

Monday, September 29th, 2025

10 round-trip options

Returning

Sat, Oct 4, 2025•5 Day Trip

$641 USD

Google Flights

Returning

Sun, Oct 5, 2025•6 Day Trip

$630 USD

Google Flights

Returning

Mon, Oct 6, 2025•7 Day Trip

$729 USD

Google Flights

Returning

Tue, Oct 7, 2025•8 Day Trip

$1,195 USD

Google Flights

Returning

Wed, Oct 8, 2025•9 Day Trip

$1,273 USD

Google Flights

Returning

Thu, Oct 9, 2025•10 Day Trip

$1,208 USD

Google Flights

Returning

Fri, Oct 10, 2025•11 Day Trip

$1,703 USD

Google Flights

Returning

Sat, Oct 11, 2025•12 Day Trip

$1,327 USD

Google Flights

Returning

Sun, Oct 12, 2025•13 Day Trip

$939 USD

Google Flights

Returning

Mon, Oct 13, 2025•14 Day Trip

$875 USD

Google Flights